<div class="title" (click)="toggle()" style="margin-top:0;">
    <span>{{panelTitle}}</span>
    <div class="panel-info" *ngIf="panelInfo">{{panelInfo}}</div>
    <mat-icon>{{opened ? 'expand_more':'expand_less'}}</mat-icon>
</div>
<div *ngIf="opened" @openClose class="panel" >
    <div #contentWrapper style="padding-top:2px;padding-bottom:6px">
        <ng-content></ng-content>
    </div>
</div>